一种新型冲击高压数字化测量系统

较详细地介绍了西安高压电器研究所最近研制的冲击高压数字化测量系统(IHMS)的组成、性能技术指标、软件功能等。全套系统具有强的抗干扰性能、方便的操作环境,其自动化程度高,能满足IEC1083—1“高压冲击试验用数字记录仪第一部分:对数字记录仪的要求”标准和相关的最新国家标准的要求,且性能价格比高,是一种可广泛推广的高新技术产品。     

后奢侈品时代的消费者

正现在的高收入人群觉得,随着收入和财富的增长而不断添置奢侈品是件没有必要的事情。这就是所谓的「后奢侈品时代」概念。奢侈品行业目前状态并不稳定;虽然有很多机会,但与此同时,也有许多能够威胁到行业增长的因素。专业服务公司德勤(Deloitte)在他们的《奢侈品的全球力量》研究中,强调了「奢侈品天启四骑士」的概念,即声誉风险、监管和利益相关者、外部事件以及惯性。这些研究都是有根据的,也肯定是值得参考的,它们反映了奢侈品行业的根本问题。这就跟鸵鸟受惊将头埋在沙里躲避危     

入口旋流对均一粒径液滴喷雾干燥塔影响的数值模拟

均一粒径液滴喷雾干燥塔（MDSD）在生产均匀尺寸颗粒产品中发挥着较大优势,进一步优化其干燥过程操作尤为重要。集成离散相（DPM）和反应工程法（REA）干燥方法,通过耦合分散室和主干燥室模型,本研究开发了完整的MDSD三维计算流体力学模型。并系统探究了在干燥过程中分散气旋流、热空气旋流以及二者共同旋流对颗粒运动和最终干燥效果的影响。模拟结果表明,在30°入射角下加入旋流效果最优。同时引入分散室和干燥室旋流后发现,同向旋流比反向旋流带来的干燥效果提升2%,更比无旋流操作下的干燥效果提升30%。欲达到同样的干燥效果,引入同向旋流,塔身可缩短近12%。     

rGO Sheets/ZnFe2O4 Nanocomposities as an Efficient Electro Catalyst Material for I3−/I− Reaction for High Performance DSSCs

In this paper, Reduced Graphene Oxide (rGO)/ZnFe₂O₄ (rZnF) nanocomposite is synthesized by a simple hydrothermal method and employed as a counter electrode (CE) material for tri-iodide redox reactions in Dye sensitized solar cells (DSSC) to replace the traditional high cost platinum (Pt) CE. X-ray diffraction analysis and High resolution Transmission electron microscopy, clearly indicated the formation of rZnF nanocomposite and also amorphous rGO sheets were smoothly distributed on the surface of ZnFe₂O₄ (ZnF) nanostructure. The rZnF-50 CE shows excellent electro catalytic activity toward I₃^? reduction, which has simultaneously been confirmed by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel polarization measurements. A DSSC developed by rZnF-50 CE (η?=?8.71%) obtained quite higher than the Pt (η?=?8.53%) based CE under the same condition. The superior performances of rZnF-50 CE due to addition of graphene in to Spinel (ZnF) nanostructure results in creation of highly active electrochemical sites, fast electron transport linkage between CE and electrolyte. Thus it’s a promising low cost CE material for DSSCs.

     

Nanobridged rhombic antennas supporting both dipolar and high-order plasmonic modes with spatially superimposed hotspots in the mid-infrared

Mid-infrared antennas (MIRAs) support highly-efficient optical resonance in the infrared, enabling multiple applications, such as surface-enhanced infrared abso...     

The relationship of early alliance ruptures and their resolution to process and outcome in three time-limited psychotherapies for personality disorders.

This study examined the relationship of early alliance ruptures and their resolution to process and outcome in a sample of 128 patients randomly assigned to 1 of 3 time-limited psychotherapies for personality disorders: cognitive–behavioral therapy, brief relational therapy, or short-term dynamic psychotherapy. Rupture intensity and resolution were assessed by patient- and therapist-report after each of the first 6 sessions. Results indicated that lower rupture intensity and higher rupture resolution were associated with better ratings of the alliance and session quality. Lower rupture intensity also predicted good outcome on measures of interpersonal functioning, while higher rupture resolution predicted better retention. Patients reported fewer ruptures than did therapists. In addition, fewer ruptures were reported in cognitive–behavioral therapy than in the other treatments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

冲击电压校准器的实验验证

本文介绍的是用来校验冲击峰值电压表的标准仪器——冲击电压校准器的实验验证方法的原理及实用试验线路,分析了实验误差。     

Seasonal variations of susceptibility to oxidative stress in Adamussium colbecki,a key bioindicator species for the Antarctic marine environment

The area of free radical biology is of increasing interest for marine organisms since the enhanced formation of reactive oxygen species (ROS) is a common pathway of toxicity induced by stressful environmental conditions. In polar environments responses of the antioxidant system could be useful as an early detection biomarkers of unforeseen effects of human activities which are progressively increasing in these remote areas. However, the characterization of antioxidant defences in appropriate sentinel species is of particular value also in terms of a possible adaptation to this extreme environment. The scallop, Adamussium colbecki, is a key species for monitoring the Antarctic environment and, besides single antioxidants, the total oxyradical scavenging capacity (TOSC) assay has been recently used for quantifying the overall ability of this organism to neutralize peroxyl radicals (ROO*), hydroxyl radicals (*OH) and peroxynitrite (HOONO). The aim of this work was to obtain a better characterization of these biological responses which can indicate the occurrence of biological disturbance; in this study the total oxyradical scavenging capacity was further analyzed to assess the presence of seasonal fluctuations in the susceptibility to oxidative stress in this species. The capability to neutralize peroxyl radicals and hydroxyl radicals increased at the end of December, while resistance towards peroxynitrite did not show any significant variations during the Antarctic summer. These results suggest the occurrence of metabolic changes which mainly influence intracellular formation of ROO* and *OH, with more limited effects on HOONO. Despite the limited time window analyzed, as a typical constraint in Antarctic research at Terra Nova Bay, an increased resistance to these specific oxyradicals might be related to the period of highest feeding activity, or to other intrinsic factors in the animals' physiology such as the phase of reproductive cycle.